About the Author

STEVEN LEVITT is a Professor of Economics at the University of Chicago and an editor of The Journal of Political Economy. In January 2004 the American Economic Association awarded him the John Bates Clark medal, a prize honouring the economist under 40 who made the greatest contribution to the discipline.

Stephen J. Dubner is an award-winning author, journalist, and radio and TV personality. He quit his first career as an almost rock star to become a writer. He has since taught English at Columbia, worked for The New York Times, and published three non-Freakonomics books.